Winding machine



Nov; 1, 1932.

F. D. SPRAGUE WINDING MACHINE Filed Dec. 17, 1929 5 Sheets-Sheet 1INVENTOR.

ATTORNEY.

Nov. 1, 1932. SPRAGQE 1,886,063

WINDIYNG mAcfimE Filed Dec. 17. 1929 5 Shuts-Sheet 2 I N VEN TOR.

. ATTORNEY.

Nov. 1, 1932. F. D. SPRAGUE WINDING MACHINE Filed Dec 17. 1929Sheets-Sheet 3 em \m I NVEN TOR.

ATTORNEY.

Nov. 1, 1932. Y F. b. SPRAGUE 1,886,063

- 7 WINDING momma Filed Dec. 17, 1929 5 Sheetshet 4 INVENTOR.

BY 2M A TT ORNE Y.

F. D. SPRAGUE WINDING MACHINE Nav. 1, 1932.

5 Sheets-sheaf. 5

Filed Dec. 17, 19 29 A TTORNE Y5.

Patented Nov. 1, 1932 UNITED STATES PATENT. o'FricE FRANK DESMOKD-SPRAGUE, OF QUINCY, MASSACHUSETTS, ASSIGNOB T SPRAGUE SPECIALTESOOMRANY,OF QUINH, EASSACHUSETTS, A CORPORATION 01? MASSA- GHusEr'rs- I wrnnnveimonnvn v Application filed December 17, 1929. Serial No. 414,737.

The present invention relates to windingmachines and more particularlyto machines for the mass production of coiled articles wound to apredetermined number of turns.

One application of this invention is in the manufacture of a certaintype of electrical condenser which consists of a composite coilcomprising as a rule two metallic strip conductors, separated'byinterposed layers of paper or other suitable dielectric material.

These condensers, as a rule, are wound from endless rolls of metal foiland paper cut to the proper width, the rolls being so disposed relativeto'each other that in winding the metal foil and paper layers two ormore paper layers are interposed between the two metal foils.

The mandrel is rotated manually or a motor and the condenser wound tothe required number of turns, after which the mandrel is. stopped andthe paper and metal foil severed from the stock rolls.

All other factors remaining unchanged,

. the capacity of the condensers is dependent vious, therefore, that toobtain a predeteron the length of the wound strips. It is obminedcapacity, the number of turns of the condenser have to be maintainedwith great accuracy; For this purpose winding machines, as a rule, areprovided with revolu tion-counters. When the operator, tollowing theindication of the counter, notices that the required number of turns towhich the con:

denser is to be wound, is approached, he

4 specifications,

slows down or stops altogether the winding mandrel and by carefulrotation thereof completes the winding of the condenser. Y I

It is evident from the foregoing that such procedure not only requiresfrequent observation of the revolution counter onthe part of theoperator, and thus not only interferes with and delays or prevents himin his other functions, but also considerably slows down the windingoperation due to the required slow and careful winding of the last fewturns. Furthermore, even with the greatest care on the part of theoperator, mistakes due to the human element, are likely to occur, and asthe last turns of the condenser correspond to the diameter ofthecondenser,

invention to provide'a mechanism whereby the winding machine, afterwinding a. predetermined number of turns-determined by the setting ofthe machine-is automatically stopped at exactly the number ofrevolut1ons required for the winding of the con.- denser to its propercapacity.

Furthermore, when the condensers ar wound with present-day windingmachines, the operator is required to manually sever the metal andpaper-strips from the stock rolls, and also required when starting anewj .condenserto bring the paper and metalstrips inproper lateral andlongitudinal alignment to the winding mandrel. These operations, besidesrequiring special skill and care on the part of the operator, alsoconsiderably I 1 reduce the speed of production.

It 1s, therefore, a further object of my invention to relieve theoperator of the duties of severing and re-aligning the w-indingstock andto increase the speed of operation by providing means to automaticallysever and; realign the metal and paper strips.

' Further objects of my inventionwill pear as thedescription progresses.

in the drawings forming part of these Figure 1 is a vertical elevationof a winding-machine embodying my invention, as

viewed from the'operators position.

Figure 2 is a side elevation of Figure 1,

as viewed from the leftof' the operators position. V Figure 3 IS a frontelevation of the drivingmotor and transmission mech anism.

- Figure 4 is a top view of the mechanism illustrated in Figure 3.

Figure '5 is a side View showing the gear and chain transmission meansas viewed from Figure is a sponding spindles 15ii these spindles beingand eeding mechanism.

Figure 8 is a plan view of the cut-off mechsectional view of the trip-,block.

Figure 10 is a side view of the trip-block as viewed from the right ofthe operators position.

rier me and associated mechanism.

Fig. 12'is a frainental 'side view showinga properly reinforiced by avertical stiffening rame 12 and by ribs 200 the frame being rovided witha plurality of bored' bosses 2000, which constitute bushin ofcorreadapted to carry stoc rolls a/1, a2, etc.

In the illustration eight spindles 15-15 are shown corresponding to theeight stock rolls a-1to a8. Of these rolls the rolls a-1 and 0- -5 arerolls of metal foil, while the rest are rollsof aper, andthe'disposition of the rolls is suc that in winding three layers of pa rare interposed between the."

two layers 0 metal foil.

For proper alignment of the ndividual layers the spindles 15 areprovided with lateral ad'ustment, effected by -means of hand-wheels 16and when adjusted the spindles are loclred in the desired by lockingwheels 17.

Carried on each spindle 15 and secured thereto. is a guide-flange 201,having preferably a larger diameter than the maximum diameter of thestock to be wound. The stock rolls are pressed with their inner faceagainst the flange 201 by means of clampin collars 19, slipped over thespindles 15, an secured thereto by means of butterfly nuts 202.

For the pro r retardation of the stock during the win and for themaintenance of its r0 r tension, I provide for weighted bandro 203,suspended eitheron upper or on lower supporting studs 204, respectively205, which project orizontally rom the frame 11. In case of new stockrolls and as long as the original diameter of the roll has not'beenreduced below a given limit, the bruke-band,as shown for the sevenrolls,

position a1, a'-2 and 0-4 to 0-8, is suspended on 11 is a perspectiveview of the car.

' 30, which in 0 low that limit, (as shown for roll a--3), to

maintain proper tensioning, the brake-band 203 is removed from its stud204 and suspended on the corresponding stud 205.-

To feed and guide the winding stock from the rolls toward, the windingmandrel 25, later to be described, there are provided proper guiding andfeeding means. These means comprise carefully ground rotatable rollers20, their spindles l98vbeing supported in bushings 207 of bosses 207a ofthe frame 11, one guide roller 20 being provided for each of the stockrolls except roll a-4, the disposition of which requires an additionalroller 20-a, and roll a--8, disposition of which requires no suchroller.

After passing rollers 20, the stock strips are carried under individualguide rollers 21, which are similar in construction to the rollers 20,and which are preferably arranged in a bank unit, their spindles 199beingsupported in bushings of a common obliquely dis osed boss 21-a ofthe frame 11. From rol ers 21 the material is fed over individual fixedguide-rods 208, preferably supported by a common vertically-disposedbracket 209,

.aflixed to the frame 11 by screws 209a.

From the guide-rods 208 the individual strips are fed to a commongathering roller 22 of the roller carrier-frame 88,later to bedescribed,

.23 and 24 of the roller carrier frame and thence is wound around themandrel 25.

The disposition of the stock is shown for condensers having two layersof metal foil with three layers of paper interposed. It

is apparent that by omitting some of the pa-' per rolls the same machinecan be used for condensers having less than three layers of paperbetween the metal foil, and it is also obvious that by increasing thenumber of spindles, condensers having a larger number of paper and metalfoil layers can be wound.

It should also be noted that the shown disposition of the stock rollsand ide-rollers provides for a very compact and asily serviceable layoutof the winding-machine, whereas the feeding, aligning and braking meansinsure exactness and proper tensioning of the winding. I

The driving mechanism is illustrated in Figs. 1 to 5. The unit islocated on the top of the bed-plate .10 to the ri t of the frame 11, andin front of the sti ening frame 12, and comprises an electric motorration, is in constant revolution irres ectlve of intermittent stoppageof the winding. Provided on the motor-shaft 210 is a fly-wheel 31 (see4), the rightits . hand face of which constitutes a hollow cone.

Cooperating with the hollow cone to form a clutch mechanism therewith isconed mem- The shaft 212 also carries a driving sprocks et37, whichengages by means of a chain 38, a sprocket 39, provided on athreaded-mandrel-driving shaft50, this shaft being supported on itsright end by a pedestal bearing 64 and at itsleft'by a bearing 224 ofthe frame 11;. A fixed idler pulley 40, carried by an idler-arm 41,aiiixed to the pedestal 64,

' and when the latter, through engagement of enables adjustment of thechain 38.

. and 32 result in stoppage of the drivin shaft 50. To acceleratestoppage a brake-s ea 34 f so a locking-collar 53. The latch-rod 54-also Fig. 4)..

From the above it"znay be seen that engagement of the clutch member 32with the corresponding driving member 31, causes rotation of thedriving-shaft 53 through the 4 medium of the aforesaid gear and chaintransmission.

- Disengagement of the clutch members 31 is provided, which engages theoutside face of the clutch member 32. when this member is in itsdisengaged position (as shown in l shall now proceed in describin themeans for the control of the winding an automatic sto mechanism, detailsof which are shown in igs.3,4,8,9,10 and 11.,

These means-comprise the mandrel driving shaft 50, previously referredto, which is threaded throughout its whole length and provided with ahandwheel 130. Forming an extension of the shaft 50 is a winding mandrel25, its winding portion proper beingdisposed to the left side of theframe 11;

llocated below the driving-shaft 50, and supported on its right-hand endby the pedestal 64, and on its left-hand end by a pedestal 63. isaguide-rod 55, below which and also supported by the pedestals 63 and 64is a threaded latch-rod 54. The rod 54 is slidably mounted whereby aspring 65 disposed in a bore 214 of the pedestal 64 presses against theright-hand end of the latch-rod 54' and tends to force it toward theleft.

Carried on the driving-shaft 50 is a trip.

block51, details of which are shown in Figs. 9 and 10. The trip-blockconsists of a block 51a havin 'a downward extending portion 48. The bock 51a is-provided with a bore 56.

of slightly larger diameter than the drivingshaft 50, and the extension48 is provided with a bore 55a, adapted to receive the guide rod 55.Located ina longitudinal recess 57, 1

- of the block 51, abovethe bore 56, is a pawl 58, swingedly mounted ona pivot pin 59 and provided with a handle 60. a A top plate 215,

* rovided with an aperture 216 to receive the andle 60 is screwedor'otherwise secured to a assumes the position shown in Figs. 9 and 10',

whereby it projects with its toothed end'into the bore 56 and therebyengages the threads nder the action of a spring ofthe shaft 50. However;upon counterclockwise movement of the handle 60 the sector 61 from thethreads of shaft 50.

When the pawl 58 engages the shaft 50 shaft 50 toward the right andadvances on the shaft' the distance of one thread for every revolutionof'the shaft. The extension 48 being guided by the'rod 55 prevents thetripblock' 51 from rotating with the shaft 50.

.pawl 58 is. lifted and disenga'ges its toothed Carried by the latch-rod54 are two threaded nuts or collars, viz. a stop-collar 52 and carriesat its right-hand and a lever 78, which enables the operator to forcethe shaft 54 towards the right against the action of the spring 65Mounted on the left-hand vside of the bearmg pedestal 63' is .a startingand latching .mechanisn'i, details of which are shown in Fig.- 6. Alatch lever 66. is mounted on a v pivot 219, of the pedestal 63, and hasthree extension arms of which the upper 220 carries on its end thelatch-cam 222, the extension 67 forms an operating handle, and theextension 221 serves as an anchor for a latch spring 68.- The other endof the spring 68 isanchored in an adjustablescrew-hook 69, carried bythe plate 10.

It will appear that if the shaft 54 is moved toward the'ri ht by meansmore fully detoward the leftabuts with its end 7 2 against the face ofthe cam 222 and is thereby prevented from such leftward movement. Upondepression ofthe handle 67 in the position 'shownin ig. 6, the cam 222trees the end 72 and thereby allows the shaft to slide toward the leftand behind the cam 222, thus preventing the-latched lever from returningto its normal position.

Connected'to the extension 220 about in the middle thereof is a tie-rod71 (see Figs. 4 and v 6) which interconnects the latch 66 with the Ilocking-nut 7 4a.

clutch-member 32 by the following means: The tie-rod 71 is threaded onits portion 80, and carries there ad'ustably a nut 74 and a ngaging thetie-rod by means of its bifurcated end 44 is a doublearmed clutch-lever7 3,-7 3a, pivoted to the'frame of the motor at 42. A portion 79 of thetie-rod 71 extends beyond the bifurcated end of the arm 73 and isprovided on its end with nuts 75 and a washer 77, and between saidwasher and the bifurcated end 44 there is located a helical compressionsprin 76, pressing a ainst the arm 73. The arm 3a of the c utchleverengages by means of a suitable joint 43 the shaft 33 of theclutch-member 32.

To start rotation of the winding mandrel, the operator depresses thestarting handle 67, first against the sole action of the spring 68 andupon further movement against the combined action of this spring and theleafspring 70. This draws the tie-rod 71 forward and rotates the clutchlever 7 3--73a counterclockwise, which causes the cone mem ber 32 toengage the rotating fly-wheel 31 of the motor 30. Power is thustransmitted through motor pinion 35, gear 36, sprocket 37, chain 38 andsrocket 39 to the drivingshaft and man rel 25 and causes these torotate.

As the handle 67 is depressed the cam 222 of the latch 66 clears the end72 of the latchrod 54, as described, and allows the latter to I movetoward the left under the action of the spring 65. T his locks the latch222 and prevents the tie-rod 71 and lever 73 from returnin to normalposition.

ith the shaft 50 thus rotatin the tripblock 51 progresses toward the rigt until its downward rojection 48 engages the stop-collar 52, an in itsfurther movement thus forces the tie-rod 54 to the right against theaction of its spring 65. Retraction of the end 72 releases thelatch-lever 66, and the spring 68 returns the latch-lever 66, handle 67and tie-rod 71 to'their normal position. The arm 73 being also returnedto normal osition, eauses the cone 32 to disengage the y-wheel 31 and toengage, with its right-hand face, the stationary floating brake-shoe34.. This arrests the driving-shaft 50 and thus stops winding of thecondenser.

The number of turns of the condenser as appears is thereby determined bythe position ral part of the carrier-frame 88, is a cross of thestop-collar 52, which is shifted to obtain a seiected number of turnsand secured in such selected position by the locking-collar 53. Toincrease the number of turns the collar 52 is moved toward the right,and vice versa.

After the winding of a condenser is comleted, to start winding of asubsequent conenser, the operator ma return the tripblock 51't0 itsinitial position by first disengaging the pawl 58 by counterclockwiserota-' tion of the handle 60 and then pressing the block towards left bymeans of this ban e.

The handle '78 provided .on the rod 54 -enables the operator to manusllstop winding at any desired moment. y forcing, ,by means of the handle78, the latch-rod 54 toward the right the latch is returned to itsnormal stop position in a similar way as through engagement? of thetrip-block extension 48 with the stop 52, whic has been discussedpreviously. V

The leaf-sprin provides for a soft and easy starting of t e mechanism.The sprin as previously stated, does not press norm y against the latchcam'222, but only upon sli ht depression of the starting handle 67. In tis position of the handle 67 the clutch members 31 and 32 are partiallyengaged, permitting a slipping action. If the operator further depressesthe handle 67 the-faoe of cum 222 clears the end 72 of the latch-rodi54.This locks the latch 66 and brings the clutch mem here into fullengagement.

The s ring 76, which is adjustable by means 0 the nuts 75, compensatesfor any wear of the clutch faces or slack motion that may result in thebearings or other portions of the device.

The winding speed may be changed either by regulating the speed of themotor or by substituting the s rocket wheels 37 and 39 with wheels of dierent size.

A revolution counter 226 is preferably provided and is shown as beingsupported on the pedestal 64 and driven by means of gears 227 and 228,from the shaft 50. This revolution counter is used for the setting ofthe stop collar 52 on the rod 54, as weli as a check, but is notrequired in regular operation as it is apparent that once the collar 52is properly set, the required number of turns will be obtainedautomatically.

The cut-off and feeding mechanismtsee Figs. 1, 2, 7, 8, 11 and 12)comprises a carrleri frame 88 having two arms 260-260 connected by aflat rib 261, said frame being inclined toward the front and supportedby means of a spindle 87, pivoted at one end in the frame 11 and on itsother end in a bearing 253 of a vertical' end-plate 85. Thecarrier-frame 88 is subiect to angular motion around the spindle 87under conditions later to be de scribed.-

Fixedly connected with or forming integarm 251-252. Anchored to the rearextension 252 of the cross-arm is a coil-sprin 89, the other end ofwhich is anchored to thefixedlate 10 by means of an adjustable screw255. i e coil spring 89 tends'to impart to the cartier-frame 88a-counterclockwise rotation and thus to lift its front end. To arrestsuch rotation of the frame, there is rovided an adjustable stop-screw 90carried y a lag 256,

aspindle 258which is inioned in and pro. jecting through the en late 85.The projecting end ofthe spin 1e 258 is provided with an operatinghandle 93.- Normally,

stop-block 91 lies with its shortest face against the stop-screw 80, asshown in Fig. 7 however, uponrotatlon of the handle 93 over an angle ofdegreesthe trip-block 91 confronts its longer face toward's the screw90, thus the spring 89 to further rotate the frame 88 in acounterclockwise d1- motion and thus further raiseits front end for apurpose later to be described. f For clockwise rotation of the frame 88,

and thus to lower its front-end, there is provided. an 0 rating handle95, which by go means of a s aft 96, a lever 97 and a 98,

engages a stud 253a of cross-arm 251. Clockrotation of the handle 95will cause similar rotation of the cross-arm 251, spindle 87 and theframe- 88. The handle 95 is sea cured to the shaft 96-by an adjustingcapscrew 100 and the handle may be secured to the shaft in any desiredangular relation convenient tothe operator. 1

The clockwise rotation or downward movement of the carrier-frame 88 islimited by an adjustahleistop screw' 101, supported by a bracket 101aafiixed to the end-plate 85,

front end and between these arms rotatably located on the spindle 87 isthe main roller 22,- which, as already stated, gathers the individualstock strips fed from the guide-rods 208, into a single composite strip.The ends of the arms 260 constitute bearings 260a for the feeder roller23.

' .A double-armed swinging frame 103103 4; provided with a cross member265 is pivoted between the arms 260260 in bushings 263263 thereof bymeans of a spindle 275. The swinging frame arms 103103 form at their endbearings 264--264 to carry the clamp roller 24. Y

A leaf-spring 105 aflixed to the rib 261 of the frame 88 presses againstthe crossmem her 2650f the supplemental frame 103 and maintains normallythe roller 24 pressed against the roller 23. Afiixed to the right arm ofthe supplemental frame 103 is a camroller 106, which when the frame 88is raised above the normal position engages acam 107 aihxed to the frame11. See Fig. 12.) This prevents the roller 24 from following the frame88 and the roller23 in their upward movement, and thus provides for agap between the rollers 23 and 24 for the insertion of new stock. Theraising of the frame 88 above its normal position, as has already frame88' are slightly. upwardly bentat their heen'stated, is obtained by themovement of the handle 93 so as to presentthe-longer face lock 91 to thestop-screw 90.

By returnin handle .93 to the position shown in Fig. the carrier-frame88 is re turned to its normal position whereby the,

roller 23 again comes to rest on roller 24 and supported and afiixed toon its left side to the top of the end-plate85 and on its right-side bymeans of a supporting brace 272 to the frame 11. In its central portionthe knifeguide is provided with a slot for a serrated knife bladellO.Attached to or integral with the knife-blade 110 is a lug 27 3 pivoted Iby means of a pin 117 to a lever 112. The

lever 112 is pivoted on its turn on a pivot 121 to the brace 272, thefree end of the lever .112 being provided with a reduced vortion 274disposed within the extensions 0 a fork 1 V yoke-arm 113, later to be oryoke 275a of a described. a

in the normal position of the cutting mechamsm, as shown in Fig. 8, theportion 274 retracted and rests against a sto -pin 118 providedon thetop edgeof. the en -plate 85. r

The yoke-arm 113 is mounted on a spindle 119 pivoted on the end-plate85, and is re- 1 vided below its pivoting point with a s ort extension276, to which is suspended a, coilspring 115, anchored with its otherend to the end-plate-85. The spring 115 tends to retate the yoke-arm 113counterclockwise, thus retalnmg the knife-lever 112 in the positionshown in Fi 7 and 8. The yoke-arm 113 .is also provi ed'with asector-shaped extension 280, having a correspondingly shaped slot 121.

Also mounted on the spindle 119 is an ad- Y justable cam-levern 114,which carries on its upper end afianged screw 120, passing through theslot 121 of the yoke-arm 113.

The end-plate 85 is out out corresponding to extension 280, therebygiving access to screw. 120 to permit its adjustment i. e. its shiftingin the slot 121. The lower front end of the cam 113 is slightly upwardlycurved and cooperates with the carrier-frame, as will be shown later on.i

The yoke-arm 113 also carries a cam 116, which normally abuts against aroller 121 of its normal position and also returns it thereto wheneverthe carrier-frame 88 is returned to normal position, even should thespring the left-hand arm 260. The cam 116 retains jthe yoke-arm 113 andthusthe knife 110 in preven action of the frame 88 throws out stock ma-,

terial from the rolls a '-1,'a2, etc;

At the same time the frame 88 also approaches the compodte strips to theedge of the knife-blade 112, and when during the tilt-- ing of frame 88the roller 124 comes to enthe curved lower end of the cam 114, it causesclockwise rotation of this cam and of the yoke-arm 113, and causes thelatter to force, by means of its lug 275a pin 274 and lever 112, theknife 110 to project through the slot of the guide 111 and to sever withits'serrations the wound condenser from the rest of the stock. a

When the front end of the carrier frame 88 is lowered by actuation ofthe handle 95 as above described, and the hand-wheel 130 held fast toprevent rotation of the mandrel, stock is drawn from the rolls withoutbeing wound on the mandrel. After the knife 11() severs the woundcondenser from the stock rolls and the carrier frame is returned to itsnormal jects an hangs loosely from between the rollers 23 and 24. Thelength of the drawnout stock corresponds to the length of the are whichthe clamping edge of the rollers 23 and 24 describes when these rollersmove from their normal into their lowermost positions. These twopositions of the rollers are so selected that the length of thedrawn-out stock is suflicient, without additional manual drawing ofmaterial, to 'n. the winding of a new condenser when t e carrier framehas returned to its normal position.

In case the diameter of t e winding mandrel is changed the arc of swingbetween the normal and lowermost position of the carrier frame 88 has tobe changed accordingl by means of the adjustable stop-screw 10 At thesame time, however, it is also required to slightly change the positionof the knife cam 114 in its relation to the yoke 113, this being done byshifting the adjusting capscrew 120 in the slot 121.

The clamp rollers 23 and 24 retain the stock in proper alignment to eachother and to the winding mandrel, both during cutting as well as instarting the winding of a new condenser.

While I have described and shown a ific structure to illustrate myinvention,

it should be well understood that various (position, the drawn-out stockpro-- modifications su themselves to those skilled in the art withoutdeparting from the scope of my invention, and therefore the appendedclaims should be construed as broad as allowedin view of the prior art.

The term, manual operation, in the claims should be construed also toinclude foo operation. o

'-What I now claim as new and desire to secure by Letters Patent, isz.

1.v In.a winding apparatus for electrical condensers, a frame andstock-roll carrying spindles mounted thereon, a winding mandrel andmeans to feed and 'de the stock from the spindles to the man el saidmeans including a rotatable feedin frame, manual -means to startrotation of 516 mandrel and automatic means to stop such rotation aftera predetermined number of revolutions, and means to rotate the feedingframe relative to the mandrel to advance the stock for the windin of asubsesuent condenser and to sever e wound stock from the stockoroll.

2. In a coil winding mechanism, a feeding frame over which the stock isfed, 'a winding mandrel and manual means to start rotation of saidmandrel, automatic means to sto such rotation after the coil has beenwoun to a predetermined number of turns, manual means to arrest saidmandrel independently of the automatic stopping means, and manuallyinitiated means to rotate the fee frame relative to the windin mandrelan to sever the wound condenser om the winding stock and automaticallyadvance stock of suflicient length to start winding of a subsegirntcoil.

3. automatic control device for winding apparatus, comprising a windinshaft and a driving motor clutch mechanism inter osed between said motorand said shaft an a member advancin along said shaft when said shaft isrota an operating handle which, when placed in an operative positioncauses the clutch to enga and the motor to drive the shaft, automaticmeans maintaining the handle in its operative tion, and means to returnthe handle in its rative 'tion and dise the clutch o a r said member hasadvan a predetermined distance along said shaft.

4-. In a winding apparatus, a normally revolving motor and a normallystationary winding shaft, a member advancing alongsaid shaft when theshaft is rotated, means under the control of the operator for connectingsaid shaft with said, motor, automatic means for subsequentlyinterlocking such connection Ill feeding device, comprising api'votallymounted frame havinga plurality of positions, including anintake, a winding and a cutting position, and resilient means tomaintain said frame in the intake and winding positions.

6. In a winding apparatus stock feeding and cutting means, comprising arotatable feeding frame and means to maintain said frame in a normalposition, a cutting device, and means under manual control to move theframe and approach the stock to the cut.- ting device, andsimultaneously advance the stock for the beginning of a new condenser,

and to subsequently sever the stock through actuation of the cuttingdevice.

In a winding apparatus stock feeding means comprising a feeding frame,and cutting means normally inactive, clamping an rollers for the stockcarried by said frame,

the stock being normally clear from the cutting device and brought inproximity thereof upon manual movement of the frame, said movement alsoactuating the cutting means 255 to sever the stock. 7

8. In a condenser winding machine a cutting and feeding device,including a rotatable stock feeding frame, means to maintain said framein normal position, a serrated knife and a a guide therefor, and manualmeans to rotate the frame to cause the knife to project from the guideand to sever the stock, and means to retain the knife in its guide whenthe frame is in its normal position.

. 9. In a winding apparatus, in combination a feeding frame and normallyinactive cutting means, and manual means to rotate the feeding frame andactuate the cutting means upon rotation of said frame.

g 10. In a winding apparatus, in combination a feeding frame andnormally inactive cutting means, means to rotate the feeding frame intoa cutting position and actuate the cutting means upon such rotation, andmeans to adjustably vary said cutting position of the feeding frame andto correspondingly vary the position of said cutting means.

11. In a winding apparatus, a stock cutting machine including a cutterblade and a frame and a manually operated handle to rotate the frame andapproach the stock to the cutter blade, and means efiective uponrotation of said frame to advance the blade toward the stock forautomatic severance thereof.

Quincy, Mass, Dec. 12, 1929.

FRANK DESMOND SPRAGUE.

